in iraq, crowds in baghdad and basra chanted anti-american slogans in the street. a shiite muslim group called anti-muslim video, un forgivable. others are demanding u.s. embassy in baghdad close down. that's the world's largest american diplomatic mission with some 15,000 employees. in tehran, hard liners burning the u.s. flag outside the swiss embassy. riot police sit strong outside that embassy. yemen now, an air strike killed the top al-qaeda deputy, rioters there tried to storm our embassy. they made it inside the compound, but yemeni security forces used -- fired into the air and eventually sealed off the area. so that's the overview. our coverage continues now with a fox report with jonathan hunt. back to those concerns that the violence could spread to the united states. why are they voicing concerns that that could happen? >> there is worry that the violence we've seen in places like yemen could inspire extremist groups to take action right here at home and the f.b.i., dhs bulletin published today makes continual reference to anti-american sentiment stirre